---
title: "Blogs by Narendra Rajput"
description: "Read BigBinary blog posts by Narendra Rajput."
canonical_url: "https://www.bigbinary.com/blog/authors/bknarendra"
markdown_url: "https://www.bigbinary.com/blog/authors/bknarendra.md"
---

# Blogs by Narendra Rajput

Read BigBinary blog posts by Narendra Rajput.

## Posts

### Resolve foreign key constraint conflict

[Resolve foreign key constraint conflict](https://www.bigbinary.com/blog/resolve-foreign-key-constraint-conflict-while-copying-data-using-topological-sort)

- Author: Narendra Rajput
- Published: February 5, 2019
- Categories: Misc

Resolve foreign key constraint conflict while copying data for subset of tables
between databases using topological sort

### Fixing CORS issue with AWS services

[Fixing CORS issue with AWS services](https://www.bigbinary.com/blog/fixing-cors-issue-with-aws-services)

- Author: Narendra Rajput
- Published: October 31, 2017
- Categories: Misc

Explains how to fix the CORS issue when working with AWS Cloudfront and S3

### Rails 5.1 enhances ActiveSupport::TimeZone.country_zones

[Rails 5.1 enhances ActiveSupport::TimeZone.country_zones](https://www.bigbinary.com/blog/rails-5-1-returns-unmapped-timezones-from-activesupport-timezone-country_zones)

- Author: Narendra Rajput
- Published: July 18, 2017
- Categories: Rails 5.1, Rails

Rails 5.1 now returns unmapped timezones from
ActiveSupport::TimeZone.country_zones with supplied TZInfo identifier instead of
empty response

### Rails 5.1 introduced assert_changes and assert_no_changes

[Rails 5.1 introduced assert_changes and assert_no_changes](https://www.bigbinary.com/blog/rails-5-1-introduced-assert_changes-and-assert_no_changes)

- Author: Narendra Rajput
- Published: May 9, 2017
- Categories: Rails 5.1, Rails

The BigBinary team's lesson on introduced assert_changes and assert_no_changes
in Rails 5.1

## Links

- [Human page](https://www.bigbinary.com/blog/authors/bknarendra)